Question

The pulvinus helps the touch-me-not to

• A. Rapidly close the leaves on touch
• B. Supports the leaves
• C. Provide water to the leave during emergency
• D. Make the leaves more stiff

Answer 1

The correct option is A

Rapidly close the leaves on touch

A pulvinus is a localized swelling at a joint (usually in a leaf or stem) that causes the organ to move (fold or unfold). It has the ability to lose water rapidly. In touch-me-not, this property of pulvinus helps in closing of the leaves on touch.